Autostrada and Dual carriageway

Autostrada noun - An expressway in an Italian-speaking country.

Dual carriageway and autostrada are semantically related. In some cases you can use "Dual carriageway" instead a noun "Autostrada".

Dual carriageway noun - A highway divided down the middle by a barrier that separates traffic going in different directions.

Autostrada and dual carriageway are semantically related. Sometimes you can use "Autostrada" instead a noun phrase "Dual carriageway".